/Engine/Source/Runtime/Core/Public/GenericPlatform/GenericPlatformMisc.h
Returns any platform-specific key-value data that needs to be sent to the network file server
static void GetNetworkFileCustomData ( [TMap](API\Runtime\Core\Containers\TMap)< [FString](API\Runtime\Core\Containers\FString), [FString](API\Runtime\Core\Containers\FString) > & OutCustomPlatformData )